In this second book in the exceptional Curiosity House series by bestselling author Lauren Oliver and shadowy recluse H. C. Chester, four extraordinary children must avenge their friend's death, try to save their home, and unravel the secrets of their past . . . before their past unravels them.

Pippa, Sam, Thomas, and Max are happy to be out of harm's way now that the notorious villain Nicholas Rattigan is halfway across the country in Chicago.

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"The extraordinary orphans Sam, Pippa, Thomas, and Max have just started to recover from their capture and subsequent escape from the evil Nicholas Rattigan. But the children's lives don?t stay quiet for long. A slew of bank robberies is terrorizing the city. And when General Farnum, the ringmaster of the museum's immensely popular flea circus, is charged with murder..."